Hydrogen - Wikipedia
网页Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H 2, sometimes called dihydrogen, [11] but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen.
Hydrogen | Properties, Uses, & Facts | Britannica
网页2024年8月20日 · hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, …
Hydrogen - Element information, properties and uses | Periodic …
网页Most hydrogen is produced by heating natural gas with steam to form syngas (a mixture of hydrogen and carbon monoxide). The syngas is separated to give hydrogen. Hydrogen can also be produced by the electrolysis of water.
Hydrogen Facts - H or Atomic Number 1 - ThoughtCo
网页2018年9月19日 · Hydrogen exists as a pure element on Earth as a diatomic gas, H 2, but it's rare in Earth's atmosphere because it is light enough to escape gravity and bleed into space. The element remains common at the Earth's surface, where it is bound into water and hydrocarbons to be the third most abundant element.
Hydrogen | H (Element) - PubChem
网页Composed of a single proton and a single electron, hydrogen is the simplest and most abundant element in the universe. It is estimated that 90% of the visible universe is composed of hydrogen. Hydrogen is the raw fuel that most stars 'burn' to produce energy.
Hydrogen explained - U.S. Energy Information Administration (EIA)
网页Hydrogen is the lightest element. Hydrogen is a gas at normal temperature and pressure, but hydrogen condenses to a liquid at minus 423 o F (-253 o C). Hydrogen is an energy carrier. Energy carriers transport energy in a usable form from one place to another. Elemental hydrogen is an energy carrier that must be produced from another substance.
hydrogen summary | Britannica
网页hydrogen, Lightest chemical element, chemical symbol H, atomic number 1. A colourless, odourless, tasteless, flammable gas, it occurs as the diatomic molecule H 2. Its atom consists of one proton (the nucleus) and one electron; the isotopes deuterium and tritium have an additional one and two nuclear neutrons, respectively.
WebElements Periodic Table » Hydrogen » the essentials
网页Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up about about 90% of the universe by weight. It is also the most abundant element in the earth's sun. Hydrogen as water (H 2 O) is absolutely essential to life and it is present in all organic compounds. Hydrogen is the lightest gas.
Hydrogen - Wikiwand
网页Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with...
22.6: Hydrogen: A Unique Element - Chemistry LibreTexts
网页2023年7月12日 · Hydrogen gas can be generated by reacting an active metal with dilute acid, reacting Al or Zn with a strong base, or industrially by catalytic steam reforming, which produces synthesis gas, or syngas.